Q: What are the prime factors of the number 87,838,790?

 A: 2, 5, 13, 821, 823

Why are those the prime factors of the number 87,838,790?

Prime factors are the prime numbers that can be multipled together to equal the original number. You find the factors by dividing by prime numbers. It is best shown by creating a Factor Tree.

Factor Tree for the number 87,838,790

87,838,790
Factor Arrows
243,919,395
Factor Arrows
58,783,879
Factor Arrows
13675,683
Factor Arrows
821823

The numbers in bold above are the prime factors. If there are multiples, you only count them one time. This leads us to our prime factors of:

2, 5, 13, 821, 823

We can check our work by multiplying all of the prime factors together: 2 x 5 x 13 x 821 x 823 = 87,838,790

This can also be written as 21 x 51 x 131 x 8211 x 8231 = 87,838,790

If you would like to know more, or need additional explanation, please review our prime factorization explanation.


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